/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemComponent.h
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(Server, Reliable, WithValidation) void ServerTryActivateAbility ( [FGameplayAbilitySpecHandle](API\Plugins\GameplayAbilities\FGameplayAbilitySpecHandle) AbilityToActivate, bool InputPressed, [FPredictionKey](API\Plugins\GameplayAbilities\FPredictionKey) PredictionKey )